A ramp with a mechanical advantage of 4 is used to move a 38-newton load. What effort force is needed to push the load up the ramp?
A.9.5 N
B.15.2N
C.3.9 N
D.0.11 N

Explanation:

It is given that,

Mechanical advantage of a ramp is 4

It is used to move a 38 N load

We need to find the force needed to push the load up the ramp. The mechanical advantage is equal to the ratio of output force to the input force. We have output force as 38 N

So,

So, the force of 9.5 N is needed to push the load up the ramp.  

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..